Best Overall
EcoFlow Delta 3
Key details
- Weight
- 27.6 lb (12.5 kg)
- Capacity
- 1024Wh
- AC Output
- 1800W (2200W X-Boost)
- Recharge To Full
- 56 min (AC)
Fifty-six minutes is the number that sold us on the Delta 3. Plug it into a campground pedestal, a friend's garage outlet or a shore-power hookup while you cook dinner, and a 1024Wh battery is full again before the pots are washed. That changes how a week off-grid feels: you are not rationing watt-hours, and you are not waiting all afternoon for a trickle to top you up.
What 1024Wh buys is a realistic van day — a 12V fridge through the night, two laptops, phones, camera batteries and a fan — with something left in reserve. The 1800W AC side will run a small kettle or a rice cooker, though gas is still the cheaper way to boil water. Thirteen outlets is more than one van needs, but the useful ones are there, including a 100W USB-C that charges a laptop without going through the inverter. It is also quiet while it charges: under 30 dB at 600W, so it will not keep you awake on a shelf by the bed.
The long-term case is the part we care about most in a vehicle that cycles the battery every day: LFP cells rated to 4000 cycles before 80% capacity, and a five-year warranty that is among the longest in this group. The upgrade path is what makes it a system rather than a gadget — the same unit grows to 5kWh with add-on battery packs, so a build that starts small does not have to buy twice. Those packs are sold separately, which is worth knowing before you count 5kWh as part of the deal.
Pros
- Full charge in 56 minutes on AC
- 1024Wh covers a fridge and a workday
- LFP cells rated to 4000 cycles
Cons
- 27.6 lb is a two-hand lift
For most van builds this is the one we point to: a kilowatt-hour runs the fridge and the laptops, and an hour on shore power resets it.